

🔋 Power your life, sustainably and stylishly.
The Renata 364 SR621SW Silver Oxide batteries provide a reliable 1.55V power source with zero mercury for eco-friendly use. Ideal for a wide range of devices including watches, calculators, car remotes, and medical gadgets, these compact batteries offer long-lasting performance backed by a trusted brand with excellent customer ratings.
| ASIN | B00MTZI038 |
| Batteries | 2 Product Specific batteries required. |
| Best Sellers Rank | #41,658 in Health & Household ( See Top 100 in Health & Household ) #255 in Coin & Button Cell Batteries |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,642) |
| Date First Available | August 18, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.035 ounces |
| Item model number | 4332780868 |
| Manufacturer | RENATA |
| Package Dimensions | 2 x 2 x 0.02 inches |
C**Y
Good
Good and works good
C**.
Long lasting battery
Batteries for my father's watch - last long. great 2 pk batter for a great price
R**O
Works so far.
They worked fine in my watches. Don’t know how long they will last.
B**A
good battery
Batteries work well, shipped a little slowly but overall the product is good. I think its cheaper to buy them in bulk but I only needed 1 for a watch so this works. Easy to install and remove, quality is good, I will check how long it lasts in my watch,
N**8
Perfectly good batteries at a good price
Good batteries, good price. They are so small and light that they are sent via USPS in an envelope.
M**O
Great DIY battery replacement
Just what I needed. The package came in the U.S. mail faster than expected. I have a toolkit to open and close the watch, so it worked okay. Note: watches with a case that pops out can be hard to get back in place - they can be really tight. You may still want to go to a watch repair place.
G**L
Good quality!!!
Battery is in good condition. Highly recommended this supplier.
A**X
Powered my watch battery for 2.5 years
Powered my watch battery for 2.5 years. We'll see how long the second one lasts as it was stored in a cabinet.
P**R
Not much to report fitted to watch, works as advertised, Buy with confidence
غ**د
ممتازة
S**A
Llego a tiempo...
C**I
I recently picked up the Renata 20 Silver Oxide 364 Zero Mercury battery to replace the one in my watch, and I’ve been really pleased with how well it’s performed. Right out of the package it fit perfectly into the battery slot, and it powered up my watch quickly without any fuss. I liked that it felt like a reliable replacement rather than a cheap knock-off — the fit and finish seemed solid right away. Since installing it, I’ve noticed that my watch keeps time accurately and hasn’t shown any signs of slowing or losing power prematurely. It’s been several weeks now, and everything is still running smoothly. I also appreciate that this battery is mercury-free, which feels like a slightly more environmentally thoughtful choice compared to older button cells that contain mercury. Overall, the Renata 20 battery has been a dependable and easy solution for keeping my watch working well. It’s not something flashy, but for a small and essential item like a watch battery, reliability matters most — and this one delivers. I’d definitely buy it again the next time I need a replacement.
J**S
Una excelente opción Muy buena relación calidad precio
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